Recurring creaking from Eibach rear lift springs

[andrewburtenshaw]

I have a 2018 T6, T30 fully converted Highline panel van. I had Eibach rear lift balancing springs installed a while back. I didn't realise it at the time but the garage installed them on the original factory lower rubber isolators. A few days after installing them, the van started creaking going over humps and on uneven surfaces, only audible inside the van. The ride and handling were also affected and it felt similar to the wheel alignment being out of spec. I had it inspected last week, and the passenger side rubber isolator had split, and the coil spring on that side had rotated around 180 deg compared with the original install.

The lower isolators were replaced on both sides with original VW parts, and all problems, both noise and handling were fully resolved. I looked under the van and could tell they had replaced the isolators.

5 days later, the same creaking noise has returned!

I have been back to the garage and they say the week-old replacement isolators look fine and the springs are seated properly. They can't hear anything outside the van, so are struggling to track down what is going on. I've come away with no solution and no plan.

Any thoughts?

 

[andrewburtenshaw]

Has anybody else resolved this with new rubber isolators only to get the creaking/squeak return after a few days?

 

[Sasquatch]

I have those springs and run them with the polyurethane top and bottom mounts from THQ.

The material thickness on the Eibach spring is greater than standard and despite appearances dont seat comfortably in standard rubbers. If my experience is owt to go by the PU lower mounts will sort it, assuming that genuinely is the source of the noise.

The springs are tough and the standard shocks aren't up the the job on my T28 and probably on T30. It can send some strange sensations through the seat of the pants, as if the van is wagging its tail as the feeble dampers are out of their depth trying to control them, so uprated shocks are near the top of my shopping list.

 

[andrewburtenshaw]

Ah, I wondered about those polyurethane mounts. Thanks for sharing your experiences! I'll get some ordered!

 

[CRS Performance]

Has anybody else resolved this with new rubber isolators only to get the creaking/squeak return after a few days?

We have removed plenty of these springs due to the constant squeaking , the spring steel is just too thick

The first one we removed THQ had wrapped roof sealing tape around the top of the spring to try and stop the noise , Client wasnt impressed and we removed them .

The newer design polyurethane mounts that we have produced will likely help , not sure how long for ,